import java.util.HashMap;
import java.util.Map;

public class SimpleHashMap<K,V> implements MapInterface<K,V> {
    private final Map<K,V> delegate = new HashMap<>();

    @Override
    public void put(K key, V value) {
        delegate.put(key, value);
    }

    @Override
    public V get(K key) {
        return delegate.get(key);
    }

    @Override
    public int size() {
        return delegate.size();
    }
}
